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1. (WO2018049844) METHOD FOR PREPARING GRAPHENE-COATED POWDER MATERIAL, AND PRODUCT OF METHOD

Pub. No.:    WO/2018/049844    International Application No.:    PCT/CN2017/086632
Publication Date: Fri Mar 23 00:59:59 CET 2018 International Filing Date: Thu Jun 01 01:59:59 CEST 2017
IPC: H01M 4/38
Applicants: BEIJING TUNGHSU CARBON ADVANCED MATERIALS TECHNOLOGY CO., LTD.
北京旭碳新材料科技有限公司
TUNGHSU GROUP CO., LTD.
东旭集团有限公司
Inventors: LI, Qing
李青
TONG, Yunxiao
仝云霄
LI, Heran
李赫然
WANG, Zhonghui
王忠辉
Title: METHOD FOR PREPARING GRAPHENE-COATED POWDER MATERIAL, AND PRODUCT OF METHOD
Abstract:
A method for preparing a graphene-coated powder material, said method comprising: A) dispersing a graphene powder and/or a graphene oxide powder, a powder material to be coated with graphene and a polymer co-coating agent in a first organic solvent to form a first organic solvent dispersion; B) mixing the first organic solvent dispersion with a second organic solvent, and separating a precipitate after sedimentation; C) performing annealing treatment on the precipitate in an inert atmosphere to obtain a graphene-coated powder material. The polymer co-coating agent can be dissolved in the first organic solvent, but not in the second organic solvent. The present invention also relates to a graphene-coated powder material prepared via the method.